Senior Tony

Jun 18, 2025 · Backend Development

Mastering High‑Concurrency Account Balance Deductions with Kafka, Sharding, and Parallel Processing

This article examines the challenges of high‑concurrency write scenarios in ad‑billing systems, explains why row‑level locking becomes a bottleneck, and presents a step‑by‑step solution using Kafka for asynchronous peak shaving, parallel consumer processing, database sharding, hotspot dispersion, and batch deduction to achieve reliable real‑time balance updates.